Machine for mixing materials for concrete.



No. 864,386. PATENTED AUG. 27, 1907 W. H. PETERS.

MACHINE FOR MIXING MATERIALS FOR CONCRETE. APPLIOATION FILED'NOV. 7, 1905.

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MACHINE FOR MIXING MATERIALS FOR CONCRETE.

APPLIUATION FILED NOV. 7, 1905.

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wi z WmiamHPeters A? yfiaz No 864,886. PATBNTED AUG. 27, 1907.

w. H. PETERS.

MACHINE FOR MIXING MATERIALS FOR CONCRETE.

APPLICATION FILED NOV. 7. 1905.

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anmntoz @Wm Wt Li mH. 7 E? W A. 0% M UNITED STATES PATENT OFFICE. I

WILLIAM H. PETERS, OF COLUMBUS, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE JAEGER MACHINE COMPANY,

OF COLUMBUS, OHIO, A CORPORATION OF OHIO.

MACHINE FOR MIXING MATERIALS FOR CONCRETE.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed November 7, 1905. Serial No. 286,223

of Franklin and State of Ohio, have invented certain new and useful Improvements in Machines for Mixing Materials for Concrete; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The obj ect of this invention is to provide an improved machine for mixing materials especially the components of artificial stone as for example sand and cement.

The invention consists more particularly in an improved construction of mixing and feeding device hereinafter described and claimed, the invention not being confined to precisely the forms of the parts shown.

In the accompanying drawings showing one embodiment of the inventionFigure 1 is a side elevation of the machine; Fig. 2 is an elevation of the feeding end of the machine with the driving pulley removed; Fig. 3 is a similar view of the discharging end; Fig. 4 is a perspective view of the mixing and feeding device; and Fig. 5 is a sectional detail illustrating the gearing for effecting the operation of the parts.

In the several views 1 designates the mixing drum. This drum is supported upon two idler rollers 2 and two rollers 2 on a driven shaft 3.

The character 4 designates a hopper that is divided into two compartments provided at their low'er ends with feed screws on hollow shaft 5 and solid shaft 6 respectively. These screws discharge the material through hppper.

' 5* designates a driving shaft having a band pulley 5 attached thereto, said shaft 5 extending through the hollow shaft 5 and eccentrically into the drum 1, and on this shaft 5 is a mixing and feeding device which comprises four spiders 6 corresponding to each other, each spider having four arms the arms of the opposite pairs of which are at angles of about 75 degrees to each other, in which case, of course, the angle between the pairs themselves at each side would be about 105 degrees. These spiders are arranged equidistantly apart on the shaft 5 and they are so secured to said shaft that openings in a stationary plate 4 secured to the I the extremity of thearm of the second spider adjacent a wide angle and the extremity of the arm of the first spider that is adjacent the smaller angle are in a straight line parallel with the axis of the shaft 5, and so on around, or so that when the blades are attached to the extremities of the arms straight portions 16 will alternate around the shaft with inclined or spiral portions 17 between the several spiders as indicated in Fig. 4.

. The blades themselves will be'placed fiatwise against the sides of the armsof the spiders. The advantage of this double alternation of the straight with inclined or spiral portions is that the materials to be mixed will not only be more thoroughly agitated but they will at the same time be fed through the cylinder.

The shaft 6? is provided. with a disk 7 having concentric circles of face gear teeth 7", 7", 7, and 7. Journaled on the frame across the toothed side of the slidable thereon but rotatable therewith is a pinion 9. The pinion 9 can he slid or adjusted to engage any of the concentric rows of teeth 7, &c., and it is held from movement when adjusted by means of afork 10 having holes 11 ina bar on the frame 11.

On the hollow shaft 5 is a gear 12 having rim teeth 12 and miter face teeth 12. The rim teeth 12 engage an intermediate pinion 13 that in turn drives the gear 14 on the shaft 3. The shaft of the intermediate pinion 13 also contains a spur gear 15 that is driven by a pinion ,5 on the shaft 5'. The miter face gear 12 engages a miter gear 8' on the shaft 8. l

By shifting the'sliding pinion 9 from one circle of speeds of the shafts 5 and 6" can be varied and consequently the quantities of the components of the mixture correspondingly varied. 7

By the arrangement of gearing shown the drum and bladed mixing device thereon are driven in contrary directions. I From the above description and from the drawings it will be observed that the blades are arranged in a circular series about the shaft with the adjacent blades of the series at an angle to, each other, or with the alternate blades parallel and the intermediate blades at an angle to the parallel blades. It will also be seen that the drum turns with a comparatively slow motion while the bladed mixing and feeding device turns with a rapid motion in close proximity to the sidevof the drum. In operation, therefore, the materials to be mixed are carried with a slow motion by the bottom of the drum up to the rapidly moving longitudinally bladed mixing and feeding device, and within the drum each of'the blades of the mixing device successively strikes and throws the material in two directions, one at right angles to the axis of the drum and the other at an incline to such direction and toward the discharge end of the' drum. The different portions of material carried up to the mixing device at one side of the drum are then-struck and thrown back towards the opposite side in crossing lines, with a trend, due to the inclined portions of the blades, towafd the discharge end of the drum. .It will also be observed that this operation of throwing and crossing the material is varied from blade to blade by reason of the fact that the inclined and straight portions of the blades alternate around a given cross section'of the. mixipg device.

disk 7 is a shaft 8 connected with which so as to be:

its-shank bolted to the appropriate one of armies offace teeth on the disk 7 i to another the ratio of the.

Of course it will be understood that the materials are mixed not in a wet state but in a dry or merely moist condition so that there is little or no adherence of the particles of material to each other.

their axis of rotation, each of said blades being substantially parallel to said axis for a portion of its length, the remaining portion of the blade being at an angle to said axis, the angular portion of each blade being opposite to said parallelportion of its adjacent blade.

3. In a machine for mixing materials for concrete or the like, the combination of a drum, a mixing and feeding device'therein comprising a shaft and a series of circularly arranged blades thereon. the adjacent blades of the series being arranged at an angle to each other,'said shaft having its axis parallel to the axis of the drum and eccentrically therein, and means for revolving said mixing and feeding device to cause the blades to successively engage the ma- ,terials to be mixed.

4. In a machine for mixing materials for concrete or the like, the combination of a drum, a mixing and feeding device therein comprising a shaft and a series of circularly arranged blades thereon, the adjacent blades of the series being arranged at an angle to each other, said shaft having its axis parallel to the axis of the drum and eccentrically therein, and means for rotating the mixing and feeding device and the drum in contrary directions.

5. In a machine for mixing materials for concrete or the like, the combination'of a rotatable drum, a mixing and feeding device therein comprising a shaft and a series of 40 circularly arranged blades thereon, the adjacentblades of i the series being arranged at an angle to each other, said shaft having its axis parallel to the axis of-the'drum and eccentrically therein, and means for rotatingthe mixing and feeding device in a contrary direction to and at a greater speed than the drum. 7

6. In a machine for mixing materialsfor concrete or the like, the combination of a rotatable drum, a rotatable mixing device therein having a circular series of flat blades extending practically continuously from end to end of the mixing device and arranged with their faces-transverse their path of motion, the mixing device being arranged eccentrically and longitudinally within the .drum, and means for rotating the drum and mixing device in contrary directions. I 7. In a machine for mixing materials for concrete or the like, the combination of a rotatable drum, a rotatable mixing device therein having a circular series of fiat blades extending practically continuously from end to end of the mixing device and arranged with their faces transverse their path of motion, the mixing device being arranged eccentrically and longitudinally within the drum, and means for rotating the mixing. device in a contrary direction and at a greater speed than that of the drum.

In testimony whereof I atfix my signature, in presence of two witnesses.

WILLIAM'H. PETERS.

. Witnesses:

Gnonon M. FINcKnn, BENJ'. FINCKEL. 

